To all whom it may concern



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JEAN LAMBERT, JR, OF NEW YORK, N. Y., ASSIGNOR To msELF-A D- CHARLES RUMPFF, OF SAME'PLACE.

IMPROVED ANILINE-DYE.

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TO 'ALL WHOM IT MAY CONCERN:

Be it known that I, JEAN LAMBERT, Jr., of New York, in the county and State of New York, haveinventcd a new and useful Improvement in Aniline-Colors and I do hereby declare the following to be a full, clear, and exact description thereof,"which will enable those skilled in the art to make and use the same.

Thisinvention consists in a new color, or a new red-coloring material, which produces on silk, wool, cotton, and other fabrics or articles, without the aid of acids or mordants, a-shade of carminm'aud which has this advantage over the safllower, that it can be printed on silk, cotton, and wool.

Thisnew coloring-material, which I call sailranine," is obtained by me by means of an oride, of purple color, called .harmaline, marweine, or Perkins violet, which latter is obtained by the action of bichromate of potash, chloride of lime, or permanganate of potash, ortheir equivalents, when in a solution upon a salt of-aniline, such, for example, as a sulphate,- chIoroh-ydrate, acetate, or any other equivalent salt.

My-proceaafor obtainingsthe saidnex colorihg-lnatfirial tsnfi'ranine isas follows, using about the following proportions-oithe severalsubs'tnnces mentioned; to'w'it:

. I take one part, by weight, of violet-harmaline paste, and dissolve the same in two parts of ordinary acetic acid, of 8 of Baume, and one hundred parts of wat I subject the solution-to heat, and when it is boiling- I add one part of 'binoxide of lead, and keep it boiling for about an hour and a half, and then neutralize the acetic acid by plenty of caustic soda.

That portion of the violet which is not transformed into red, precipitates, because it will not dissolve in alkaline water, but the red remains dissolved, and I neztt separate the one from the other by filtration, the violet remaining in the filter. This residuum violet which remains in thelfilter will still'givs'my new coloring-product, safl'ranine-red, if .again subjected to oxidation.

The safir anine-red solution is next boiled with-.a little pulverized carbonate of lime, in order to remove any remainder of violet there-from, and the red liquid is then ready to be used in coloring silk, wool, or cotton.

I can obtain the carmine-color by addingto the safi'ranine-red' solution the chlorides either of sodium, ca'lcium,'tin,'mercury, tannic or picric acid.

In the transformation of violet harmalin'e into red, the acetic acid-'may be replaced by either sulphuric I acid, oxalic acid, or any other acid which is capable of decomposing the binox ide of lead.

On theother hand, the binoxide of lead may be replaced by the permanganate of potash, binoxide of mercur or oxygenated water.

My new product of coloring-material, called I It can be dissolved in hot water, alehohol, acetic acid, and other solvents, becomes a bluish-red by the addition of vconcentrated sulphuric or hydrochloric acids, and remains a fast 'color even when exposed to the action of concentrated acids or alkalies, such as potash, soda, or spirits of hartshorn, (ammonia.)

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The new product or coloring-material above described, called by me safi 'ranine-red. V

2 I also claim the process employed by mefor producing the said coloring-material, saflranine-red, sub: stantialiy as abovedescrihed. I

68. t This specification signed by me, this 8th day of August, 18 J LAMBERT J3.

Witnesses:

D. B. Gurnns, V J. VAN Smrvooan.

I byvme safi'ra'nine-red, possesses the following characteristics: 

